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Ext JS 4 First Look Paperback – January 10, 2012
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Top Customer Reviews
From my experience, any book about js libraries is a waste of money because it will be quickly outdated and the web will always have better and newer material. The argument that it's easier to follow a book does not really hold true since the Sencha docs provide really good and dummy-proof (I'm looking at you) tutorials as well.
I mainly got it because I was starved for more information and bored in the subway with no internet access.
As a previous reviewer noted, the book adds nothing to the material that can be found online for free. I read that review before purchasing, so I went into this with low expectations. I would have been happy with a well-organized, clearly explained version of just what is online, to save me the time of clicking around and finding it myself. Even with those expectations I was disappointed.
For someone that already knows EXT JS 3 and is looking solely for information on transitioning to 4, perhaps this book has some utility (though again, no more, and probably less, than what is online). For anyone new to EXT JS and perhaps thinking that this book will give them a general education on the topic, don't even consider it.
You won't loose a lot of hours trying to find the right documentation at the right place.
Everything is here: what's new in ExtJS 4, then the Data Package, the Layout, the Charts, Grid, Tree, and Form, the Themes and the MVC application architecture.
That said, this book is for you if you want to learn *quickly* ExtJS.
If you prefer to loose hours on the web to find the right documentation, then you may save a few bucks.
That's where the book's "consistency within itself" starts to dwindle a bit: The code examples are simple. But if you're an Ext JS 3 aficionado (like described above) and know the devil is often in details (which are not covered by this book) then simple code examples are not enough. What might also not satisfy some readers is that the number of pages spent on different topics might not always reflect the way Ext JS is usually used in: While the new MVC pattern of Ext JS 4 is the single most important change from 3 to 4, this topic is given only about 45 pages. However, the topic of charting using Ext JS is given about 55 pages which to me is clearly an overevaluation.
My summary: Use this book if you'd like to quickly get started with rather smallish Ext JS 4 projects IF you have used Ext JS 3 before and do not need to understand how Ext JS 4 works deep under the hood. What first sounds negative here might well be an advantage for readers who don't want to get the idea of how version 4 works without having to read endless paragraphs of prose.
The author, Loiane Groner, wrote a detailed guide explaining ExtJS 4 from start to finish. It is well organized, easy to digest, and has plenty of examples to keep you busy.
If you're new to the ExtJS framework... this book might not be the best place to start, as huge chunks of the book are spent drawing comparisons between versions 3.x and 4.x. (This isn't a bad thing - just something to consider.)
My only complaint is that the code examples aren't properly indented in the Kindle version. It's not a deal breaker, but it's annoying.
Most Recent Customer Reviews
The book was an OK intro. I could get as much detail on sencha.com. the book needs to give more examples on an really web application using extjs and doing customizations.Published on February 13, 2013 by web dev
Ext JS 4 is filled with a huge amount of functionality. When Ext JS 4 came out, it wasn't entirely clear how to upgrade your skills from Ext JS 3 to 4. Read morePublished on July 19, 2012 by David Michael Griffin
I am an EXT JS beginner and was expecting this book (Kindle Format) to deliver only introductory concepts with on-hand examples. Read morePublished on June 10, 2012 by Puneet
I'll start off by saying that I'm only 100 pages into it, but it's baaaaad. Some reviewers state that there's nothing here that can't be found on the web, but that's true of any... Read morePublished on May 10, 2012 by derickatunc
As title says, the book is a very first look at ExtJs 4. I wanted to quickly get started with ExtJs 4 & this book helped me. Read morePublished on April 14, 2012 by Amazon Customer
I usually do not write reviews. But this time I needed to. This book is filled with so many code errors and text errors. Read morePublished on February 11, 2012 by Randy Leinen